HyukjinKwon commented on issue #20691: [SPARK-18161] [Python] Update cloudpickle to v0.6.1 URL: https://github.com/apache/spark/pull/20691#issuecomment-457075552 @inpefess, mind if I ask to double check together? We should take a look at: 1. https://github.com/irmen/Pyrolite/blob/master/java/src/main/java/net/razorvine/pickle/Unpickler.java#L314-L352 2. https://www.python.org/dev/peps/pep-3154/ 3. ```python import pickle import pickletools print(pickletools.dis(pickle.dumps(obj)), protocol=3) ``` vs ```python import pickle import pickletools print(pickletools.dis(pickle.dumps(obj)), protocol=4) ```
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